Additive manufacturing device for cast-rolling with laser cladding

Abstract

A wall-thickness additive manufacturing device for micro cast-rolling additive manufacturing of large-scale special-shaped pipe, includes: a vertical wall, a heat-insulating cover, a crossed slide assembly and a laser cladding assembly. The vertical wall is horizontally provided on the ground; the crossed slide assembly is fixedly connected to the vertical wall; the laser cladding assembly is fixedly connected to the crossed slide assembly; the vertical wall has a shape of a T-shaped structure. The present invention uses laser welding to solve the problem of heat preservation of the processed workpiece in the process of wall-thickness forming and additive manufacturing.

What is claimed is: 
     
       1. A wall-thickness additive manufacturing device for micro cast-rolling additive manufacturing of large-scale special-shaped pipe, comprising: a vertical wall, a heat-insulating cover, a crossed slide assembly and a laser cladding assembly; wherein the vertical wall is horizontally provided on a ground; the crossed slide assembly is fixedly connected to the vertical wall by bolt; the laser cladding assembly is fixedly connected to an upper part of a longitudinal slide of the crossed slide assembly by bolt, wherein:
 the vertical wall has a shape of a T-shaped structure; the heat-insulating cover comprises a heat-insulating cover base, a heat-insulating right cover portion and a heat-insulating left cover portion; the heat-insulating right cover portion and the heat-insulating left cover portion are connected to an upper part of the heat-insulating cover base by pin; the crossed sliding platform assembly comprises a transverse slide structure, a longitudinal slide structure, a hexagon nuts and hexagon bolts; 
 the longitudinal slide structure comprises a first ball screw bearing seat, a longitudinal slide, a longitudinal slide guide, a first stepping motor, a first ball screw, a first crash pad, a first coupling, a first longitudinal ball screw nut, a second longitudinal ball screw nut, a first stepping motor seat and a first bearing end cover; in the longitudinal slide structure, an input end of the first ball screw passes through an inner diameter of the second longitudinal ball screw nut and an inner diameter of the first crash pad and is connected to an output shaft of the first stepping motor through the first coupling, and a free end of the first ball screw is fixedly connected to the longitudinal slide guide through the first ball screw bearing seat and the first bearing end cover, the first longitudinal ball screw nut is fixedly connected to a first end of the first stepping motor seat, an outer diameter of the second longitudinal ball screw nut is fixedly connected to an inner surface of the longitudinal slide; 
 the transverse slide structure comprises a second ball screw bearing seat, a transverse slide, a transverse slide guide, a second ball screw, a second stepping motor, a second coupling, a second crash pad, a first transverse ball screw nut, a second transverse ball screw nut, a second stepping motor seat and a second bearing end cover; in the transverse slide structure, an input end of the second ball screw passes through an inner diameter of the second transverse ball screw nut and an inner diameter of the second crash pad and is connected to an output shaft of the second stepping motor through the second coupling, and a free end of the second ball screw is fixedly connected to the transverse slide guide through the second ball screw bearing seat and the second bearing end cover, the second transverse ball screw nut is fixedly connected to a first end of the second stepping motor seat, an outer diameter of the second transverse ball screw nut is fixedly connected to an inner surface of the transverse slide; 
 the transverse slide and the longitudinal slide each have a cross section of U-shaped structure, a lower part of the transverse slide is slidingly connected to an upper part of the transverse slide guide, a lower part of the longitudinal slide guide is fixedly connected to an upper part of the transverse slide, a lower part of the longitudinal slide is slidingly connected to the upper part of the longitudinal slide guide, and the first stepping motor seat and the second stepping motor seat are respectively fixedly connected to one end of the longitudinal slide guide and one end of the transverse slide guide, the first stepping motor and the second stepping motor are respectively fixedly connected to the first end of the first stepping motor seat and the first end of the second stepping motor seat, and one end of the first crash pad and one end of the second crash pad are respectively fixedly connected to a second end of the first stepping motor seat and a second end of the second stepping motor seat, and the first ball screw and the second ball screw are respectively in thread connection with the first longitudinal ball screw nut, the second longitudinal ball screw nut, the first transverse ball screw nut and the second transverse ball screw nut; and 
 the laser cladding assembly comprises a welding frame, a storage barrel, a conical pin, a laser head, and a welding head, the welding frame has a shape of an oblique T-shaped structure, the storage barrel is fixedly connected to the welding frame, a top surface of the storage barrel is flush with a lower surface of a cantilever end of the welding frame, the laser head is connected to a lower surface of the cantilever end of the welding frame through the conical pin, and the welding head is fixedly connected to the lower surface of the cantilever end of the welding frame; 
 wherein a distance between the storage barrel and a top surface of the cantilever end of the welding frame is greater than a distance between the laser head and the top surface of the cantilever end of the welding frame, and a distance between the laser head and the top surface of the cantilever end of the welding frame is greater than a distance between the welding head and the top surface of the cantilever end of the welding frame, and a width of the longitudinal slide guide is equal to a width of the transverse slide; 
 wherein the longitudinal slide guide and the transverse slide guide are perpendicular to each other, and an axis of the first ball screw is perpendicular to an axis of the second ball screw; 
 wherein the longitudinal slide guide and the transverse slide guide are perpendicular to each other, and an axis of the first ball screw is perpendicular to an axis of the second ball screw.